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标题:NFF31-112 NFF31-112防涂鸭测试 涂料树指防涂鸭测试
正文:
NFF31-112:1994-12 Railway rolling stock--Protection in relation to graffiti-Tests procedures and methods of valuation, behaviour of materials and products of expulsion.General principleThe evaluation procedures must include the following criteria:material or coating;graffiti application product;graffiti removal product.The behaviour of materials is evaluated on the basis of the graffiti and removal products defined by the client railway company.The results of the graffiti removal are evaluated after several “graffiti application – removal” cycles on the basis of the following criteria:aggressivity (visual aspect);effectiveness (colorimetry);safety labels on removal products (according to the laws in force).NFT30-053: Paints-Determining resistance to liquidsNFX08-012: Colours – Colorimetric characteristics of coloured samples – Measuring devices and methods.NFX08-014: Colours – Colorimetric deviations and tolerances – Formulae for colour differe
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